USER_100 Template Data
3
Root Category
4
-- General Information
6
-- Obtaining PHP
0
-- Migrating PHP
1
---- Migrating from PHP 2 to PHP 3
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---- Migrating from PHP 3 to PHP 4
4
---- Migrating from PHP 4 to PHP 5
2
-- Database issues
0
-- PHP and its friends
1
---- PHP and HTML
3
---- PHP and COM
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PHP/FI 2.0 is an early and no longer supported version of PHP. PHP 3 is the successor to PHP/FI 2.0 and is a lot nicer. PHP 4 is the current generation of PHP, which uses the » Zend engine under the hood. PHP 5 uses » Zend engine 2 which, among other things, offers many additional OOP features.
What is the relation between the versions?
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Yes. See the INSTALL file that is included in the PHP 4 source distribution. Also, read the related appendix.
Can I run several versions of PHP at the same time?
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There are » a couple of articles written on this by the authors of PHP 4. Here's a list of some of the more important new features: * Extended API module * Generalized build process under Unix * Generic web server interface that also supports multi-threaded web servers * Improved syntax highlighter * Native HTTP session support * Output buffering support * More powerful configuration system * Reference counting Please see the » What's new in PHP 4 overview for a detailed explanation of these features and more. If you're migrating from PHP 3 to PHP 4, also read the related appendix.
What are the differences between PHP 3 and PHP 4?
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You should go to the PHP Bug Database and make sure the bug isn't a known bug. If you don't see it in the database, use the reporting form to report the bug. It is important to use the bug database instead of just sending an email to one of the mailing lists because the bug will have a tracking number assigned and it will then be possible for you to go back later and check on the status of the bug. The bug database can be found at » http://bugs.php.net/.
I think I found a bug! Who should I tell?
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